Event between (342842) 08YB3 and star GA1400:06683667 with event index number of 1145841
Geocentric closest approach at 2021/04/23 03:42:29 UTC
J2000 position of star is 20:36:47.8 +50:48:11
Equinox of date position of star is 20:37:26.2 +50:52:41
Stellar brightness G=13.8,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 110 degrees from the moon.
Moon is 79% illuminated.
TNO apparent brightness V=21.1
TNO is 13.8 AU from the Sun
and 14.0 AU from the Earth.
The TNO is moving 21.4
km/sec on the sky relative to the star, or,
7.6 arcsec/hr.
The 1-sigma error in the time of the event is 52 seconds.
The 1-sigma cross-track error in the shadow position is
581 km.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 3.9 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
Star training set for 342842, (2021/04/23 03:42UT) Object RA Dec mag sep mel Deneb 20:42:09.5 +45:21:26 1.3 5.58 115 51 Cyg 20:42:52.0 +50:25:02 5.2 0.98 111 PPM 038670 20:36:12.5 +50:29:59 8.0 0.43 110 PPM 038677 20:36:37.0 +50:47:43 9.3 0.15 110 PPM 038693 20:37:38.8 +50:48:32 10.2 0.08 110 342842 20:37:26.3 +50:52:41 13.8 110 Positions are for equinox of date
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 342842, (2021/04/23 03:42UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 5.58 115 51 Cyg 20:42:12.6 +50:20:24 5.2 0.98 111 PPM 038670 20:35:33.8 +50:25:30 8.0 0.43 110 PPM 038677 20:35:58.5 +50:43:14 9.3 0.15 110 PPM 038693 20:37:00.3 +50:44:02 10.2 0.08 110 342842 20:36:47.8 +50:48:11 13.8 110 Positions are for J2000
Event circumstances last updated at 2021/04/08 23:18:18 UT
Marc W. Buie, Southwest Research Institute